Error Handling Security
Contents |
Debug errors 6.3 Exception handling 6.4 Functional return values 7 Detailed error messages 7.1 How to determine if you are vulnerable 7.2 How to
Improper Error Handling Security Defect
protect yourself 8 Logging 8.1 Where to log to? 8.2 Handling 8.3 secure coding error handling General Debugging 8.4 Forensics evidence 8.5 Attack detection 8.6 Quality of service 8.7 Proof of validity 8.8 Logging
390 Improper Error Handling
types 9 Noise 9.1 How to protect yourself 10 Cover Tracks 10.1 How to protect yourself 11 False Alarms 11.1 How to protect yourself 11.2 Denial of Service 11.3 How improper error handling vulnerability to protect yourself 12 Destruction 12.1 How to protect yourself 13 Audit Trails 13.1 How to determine if you are vulnerable 13.2 How to protect yourself 14 Further Reading 15 Error Handling and Logging Objective Many industries are required by legal and regulatory requirements to be: Auditable – all activities that affect user state or balances are formally tracked Traceable – exception management security it’s possible to determine where an activity occurs in all tiers of the application High integrity – logs cannot be overwritten or tampered with by local or remote users Well-written applications will dual-purpose logs and activity traces for audit and monitoring, and make it easy to track a transaction without excessive effort or access to the system. They should possess the ability to easily track or identify potential fraud or anomalies end-to-end. Environments Affected All. Relevant COBIT Topics DS11 – Manage Data – All sections should be reviewed, but in particular: DS11.4 Source data error handling DS11.8 Data input error handling Description Error handling, debug messages, auditing and logging are different aspects of the same topic: how to track events within an application: Best practices Fail safe – do not fail open Dual purpose logs Audit logs are legally protected – protect them Reports and search logs using a read-only copy or complete replica Error Handling Error handling takes two forms: structured exception handling and functional error checking. Structured exception handling is always preferred as it is easier to
and Data Outsourcing Best Practices for Applications with Confidential University Data Security "Greatest Hits" Managing Passwords E-mail Harassment & Forgery Hoaxes, frauds & scams Spam Phishing Wireless Networking Encryption Best Practices Standards Secure desktop computing Secure
Exception Handling Vulnerability
servers Secure data deletion Securing printers Tips for safe computing Computing policies More spring security error handling in-depth information for Local support providers System administrators Security initiatives Critical Component compliance Authentication & authorization Penn Security &
Application Error Message Security Vulnerability
Privacy Assessment (SPIA) Security Liaisons (Restricted Access) Secure Share Secure Space Vulnerability Scanner Related links Electronic privacy PennKey Viruses Worms, trojans, backdoors Top 10 Web Application Security Vulnerabilities Based on OWASP Research A7: Improper https://www.owasp.org/index.php/Error_Handling,_Auditing_and_Logging Error Handling A7.1 Description Improper handling of errors can introduce a variety of security problems for a web site. The most common problem is when detailed internal error messages such as stack traces, database dumps, and error codes are displayed to the user (hacker). These messages reveal implementation details that should never be revealed. Such details can provide hackers important clues on potential flaws in the site and such messages are also disturbing http://www.upenn.edu/computing/security/swat/SWAT_Top_Ten_A7.php to normal users. Web applications frequently generate error conditions during normal operation. Out of memory, null pointer exceptions, system call failure, database unavailable, network timeout, and hundreds of other common conditions can cause errors to be generated. These errors must be handled according to a well thought out scheme that will provide a meaningful error message to the user, diagnostic information to the site maintainers, and no useful information to an attacker. For example, if a hacker enters an invalid command, the web server sends an error message back to the end-user. This message should be generic, but often times presents excessive information such as "User Name Correct, Password Incorrect." That could help the attacker focus their illicit activities on the password cracking activities. Even when error messages don't provide a lot of detail, inconsistencies in such messages can still reveal important clues on how a site works, and what information is present under the covers. For example, when a user tries to access a file that does not exist, the error message typically indicates, "file not found". When accessing a file that the user is not authorized for, it indicates, "access denied". The user is not supposed to know the file even exists, but such inconsistencies will readily reveal the presence or absence o
Web Application Security Web Security Tools and Best Practices View All Web Application and Web 2.0 Threats Web Browser Security Web server threats Web Services Security and SOA Security Application attacks View All Application Firewall Security View All Database Security Management View All Email Protection View All http://searchsecurity.techtarget.com/tip/Improper-error-handling Email and messaging threats Email Security Guidelines, Encryption and Appliances Vulnerability management View All Configuration Management Planning Patch management Security Testing and Ethical Hacking Vulnerability Risk Assessment Open source security View All Operating System http://security.stackexchange.com/questions/121481/is-exposing-exception-information-in-web-service-a-security-risk Security View All Alternative OS security: Mac, Linux, Unix, etc. Windows Security: Alerts, Updates and Best Practices Secure SaaS View All Productivity applications View All Social media security View All Software development View error handling All Virtualization security View All Web Security Tools and Best Practices View All Web Application and Web 2.0 Threats Web Application Security Web Browser Security Web server threats Web Services Security and SOA Security Please select a category Application attacks Application Firewall Security Database Security Management Email Protection Vulnerability management Open source security Operating System Security Secure SaaS Productivity applications Social media security Software development Virtualization security Web improper error handling Security Tools and Best Practices Section Problem Solve News Get Started Evaluate Manage Problem Solve Sponsored Communities Improper error handling byAl Berg, CISSP, CISM This tip explains what improper error handling is, how it leads to a variety of application attacks, and what programmers can do to secure their Web applications. In this Article Share this item with your network: Related Content CRLF injection attacks: How they work and what to do ... – SearchSecurity Spear phishing: Don't be a target – SearchSecurity Best practices for protecting handhelds from mobile ... – SearchSecurity This Content Component encountered an error This Content Component encountered an error Every piece of information an attacker receives about a targeted system or application is a valuable weapon. It... Sign in for existing members Continue Reading This Article Enjoy this article as well as all of our content, including E-Guides, news, tips and more. Step 2 of 2: You forgot to provide an Email Address. This email address doesn’t appear to be valid. This email address is already registered. Please login. You have exceeded the maximum character limit. Please provide a Corporate E-mail Address. By submitting my Email address I confirm that I have read and accepted th
tour help Tour Start here for a quick overview of the site Help Center Detailed answers to any questions you might have Meta Discuss the workings and policies of this site About Us Learn more about Stack Overflow the company Business Learn more about hiring developers or posting ads with us Information Security Questions Tags Users Badges Unanswered Ask Question _ Information Security Stack Exchange is a question and answer site for information security professionals. Join them; it only takes a minute: Sign up Here's how it works: Anybody can ask a question Anybody can answer The best answers are voted up and rise to the top Is exposing exception information in web service a security risk? [duplicate] up vote 16 down vote favorite 3 This question already has an answer here: Should I be concerned if my website throws stack information? 6 answers It is a known fact that exposing the exception information to the end user provides security risks since an adversary can user that to figure out how things work internally and attack it. But what about a web service, where that information might be relevant to the developers that consume the API? On one hand exposing full stacktrace and even the message is risky since it might contain some database information e.g. on the other hand if something goes wrong and the server just says 500 "sorry", then developers would be frustrated. I guess really the proper way is to handle all exceptions you know of in a secure manner, i.e. catch business/validation exceptions and return it back with special error codes and messages (no stacktrace) and for all unknown still make 500 "sorry". But I would like to here what are the common ways of doing it and which approach should be taken from security point of view. web-service error-handling exposure share|improve this question asked Apr 25 at 13:46 Ilya Chernomordik 715416 marked as duplicate by kasperd, Neil Smithline, kalina, Matthew, LvB Apr 26 at 8:56 This question has been asked before and already has a